Tag: abiotic components

Questions Related to abiotic components

In what way a plant growing on a forest floor is adapted for its survival?

zoology environmental factors soil-nature climate factors abiotic components organisms and environment

  1. Has shallow roots

  2. Requires low light

  3. Has a deep ta root

  4. Requires strong light

  5. Requires moist soil

Show answer
Correct Option: B
Explanation:

Plants growing on the forest floor (understorey) are adapted to lower Sunlight intensity or are shade loving. This is because, the dense canopy does not allow enough light to penetrate through and reach the forest floor. Light is the limiting factor for these plants and therefore, they are adapted to survive under low light conditions. Moisture availability and related adaptations are not of consideration. Thus, the correct answer is option B.

Choose the correct answers from the alternatives given .
Which of the following best describes strata ?

botany environmental factors soil-nature climate factors abiotic components

  1. Sedimentary rock layers that contain fossils

  2. Molten rock that contains radioactive material and is dangerous to the health of humans

  3. Sedimentary rock layers that all date from the same historical time

  4. All of the above

Show answer
Correct Option: A
Explanation:

Fossils are the remains of living creatures, both plants, and animals, or their tracks. These are found in sedimentary rock. Sedimentary rock is composed of strata. The term rock strata refer to stacked-up layers of sedimentary rock. Other kinds of rocks can have layering in them, but the word strata are reserved for sedimentary rocks - rocks composed of individual fragments of minerals or other rocks. 

So, the correct option is 'Sedimentary rock layers that contain fossils'.

The salinity of the oceans is

biology environmental factors soil-nature climate factors abiotic components

  1. Increasing

  2. Decreasing

  3. Constant

  4. Decreasing now out was Increasing In Past

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Correct Option: D

In most areas, the warmest time of the day about 5 feet above the ground occurs:

biology environmental factors soil-nature climate factors abiotic components

  1. Around noon

  2. In the afternoon between 3 and 5 PM

  3. In the early evening after 6 PM

  4. Just before the sun sets

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Correct Option: B

Suppose last night was clear and calm. Tonight low clouds will be present. From this you would conclude that tonight's minimum temperature will be:

biology environmental factors soil-nature climate factors abiotic components

  1. Higher than last night's minimum temperature

  2. Lower than last night's minimum temperature

  3. The same as last night's minimum temperature

  4. Above freezing

Show answer
Correct Option: A

Which of the following is present in maximum amount in atmosphere ____________.

biology environmental factors soil-nature climate factors abiotic components

  1. Oxygen

  2. Nitrogen

  3. Carbon dioxide

  4. Hydrogen

Show answer
Correct Option: B
Explanation:
78.03% of the atmosphere consists of Nitrogen. Some is being added to it through volcanic eruptions, erosion of sedimentary rocks and recycled through denitrification.
So, the correct answer is 'Nitrogen'

If the $CO 2$ content of the atmosphere is as 300 parts per million ______________.

biology environmental factors soil-nature climate factors abiotic components

  1. All plants would be killed

  2. The plants would not grow properly

  3. Plants would grow for some time and

  4. The plants would thrive well

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Correct Option: A

$71$% of the carbon is found in ____________.

biology environmental factors soil-nature climate factors abiotic components

  1. Organisms

  2. Oceans

  3. Fossil fuels

  4. Soil

Show answer
Correct Option: B
Explanation:

Oceans have highest carbon content close to ~80%. So the answer is B. Oceans are called CO2 Sinks.

Which of the following fixes atmospheric ${ N } _{ 2 }$?

biology environmental factors soil-nature climate factors abiotic components

  1. Nostoc

  2. Algae

  3. Methanogens

  4. None of these

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Correct Option: A
Explanation:
Nostoc is a genus of cyanobacteria that are involved in nitrogen fixation. They are commonly found in the form of a gelatinous sheath that is composed of microfilaments.
So, the correct answer is 'Nostoc'.

The three R's to save the environment are

biology environmental factors soil-nature climate factors abiotic components

  1. Reserve, Reduce, Recycle

  2. Reuse, Reserve, Reduce

  3. Reserve, Reuse, Reduce

  4. Reduce, Recycle, Reuse.

Show answer
Correct Option: D